I do have one other option. I can make the L28E dizzy driveshaft fit on my GM HEI dizzy. And install my GM HEI system on the nissan L28e. The HEI system is for my 2.8L V6 engine. Swap injectors, instal the map sensor. And have at it. What ya think? Since there both the same size engine. It might work. I would have to figure out the whole fireing order thing though. Since the L28E is 135624, and the V6 is 123456. But changing the plug wires around might solve that.

 

Ok. So I got it all figured out for the 76. Ima use the slanted rad from the fiero, the computer system from the fiero, elect fan from fiero. Still got to get my fuel cell. And put in the new floor pans in. And modd the rear floor section. Then drive the damn thing.

 

Fiero eh? Cool idea... but will it benefit you anything? 2.8L V6 Fiero was rated @ 140hp... If it's tunable, then you've got some room to work with.

 

There are tons of aftermarket add ons for the GM HEI system. Same one they use on the V8s. I'll have to figure out the resetance for the Fiero's injectors Vers the Datsun's see if I can put a risistor on the datsun ones. If I can. It will save me from convering my barbbed rail to O-Ring style. And they have tuners for the Fiero ecu. Even though it's a 85, the GM HEI ecu system is relitivly the same even now. Supperchips and all them have chips and tuners for it. And if that ain't enough, lots of choices for the ignition pack. And coils. I still have to figure out how a map sensor works. So I'll know how to mount it on my intake. But in therory, it can be done. Both are 2.8's. The fiero slung it's rod barrings on three cylinders. So hell. Why not try. I can certinly get my 400$ back out of it if this works. The slanted rad. Supports. And elect fan alone is almost worth it to me. Since my plans are to slant the rad anyway.

 

^^^ I like where your head's at!

 

If this works. I'll do a full wright up on it. Even though it's not a common thing. Docing it might be a good idea. Plus, as far as I know. I'll be the first to do a GM HEI ecu system on this engine. But feel free to correct me if I'm wrong.

 

Correct me if i'm wrong (which i usually am), but isn't the firing order for an L28 153624?

 

^^^ Indeed. I imagine that "3-5" was a typing error tho, since he got the rest of them right.

 

That sounds like a really interesting approach Fub, keep us updated. I'm curious how that'll turn out.


Nismo: ^_^Ya never know.....I lost count on the number of times crossed wires ruined my day.

 

It was typing erra. Hell. I a, good with numbers. I got the first 17 charc's of pie memorized. 3.1415926535897932. And the . Between 3 and 1 is a charc too. It use that long fcker as a password.

 

dude... its called PI you tard

 

Ha ha. You ain't changed a bit snw. Love that z32 in your avatar. I am strong with numbers. But spelling is still being worked on. But hey. Pull up my first posts here. And you will be amazed at the improvement. Anyway. To stay on topic. How do maps sensors work. And where the hell do I put it. On the fiero. It's mounts on a bracket that's mounted to the upper plenuem.(yes it's spelled wrong, I think?) the rest is pretty standard hookups.

 

map sensors do just measure (sing a vacume hose) the manifold absolute pressure. so for a stock map sensor, the sensor should be right by the manifold and a vacume line runs to it from the manifold/plenum w/e they are on fiero's.

 

Good. I'll fine a nice discreat place for it then thanks.

 

Maybe you could cross reference the wiring schematics for both cars ECU's and jusr wire in the stock Z Distributor to work wit hthe Fiero ECU. I've read on several different sites that the Datsun ignition modules are far superior to the GM Hei units including usually a low rpm rev limiter setting on the GM Hei modules. Sticking with the stock distributor would also reduce the chances of having to have the GM distributors timing advance recurved.

 

Did not really think about mixing them. I do have the two plug ign mod on mine. And my gm hei is the 4 wire also. No the 6. I'll check into it. Thanks.

 

Alright. I worked on the dizzys yesterday. And useing the nissan ign on the HEI system won't work. The HEI has 6 output lines. 4 to ECU, and 2 directly to coil. But the HEI ign only has two wires from dizzy-ign same as nissan, so will HEI ign work on nissan dizzy?

 

Does the HEI have optical pick up / CAS? I got the impression you were going with coil packs???

 

so... are you trying to stick a fiero motor in the zx??? or the electronics for one?


oh and why? like whats the goal?

 

Already discussed that... read above posts.

 

Just the computer, wireing and sensors. I have nothin for my 76. Mice ate up the wires. And it looks like someone used the ecu and a fishing wieght. Since a have a 2.8L fiero with a blown motor, I figuerd what the hell. It's worth a try. And I have no clue about the ign. I am still keeping the HEI Ign with the HEI ecu and harness. I want to use a datsun dizzy with the HEI ign. So I don't have to do a custom dizzy for the l28e. Basicly just puting a gm HEI ign module on L28E dizzy for use on HEI computer system

 

i did read them, but i got confused along the way.... hmmmm.... i say just go standalone, that way w/e upgrades you add you'll never have to change your ECU setup at least.

 

Well. When I started this thread. I could spend 1k on a sds system. But now ima get a new palce. And with other bills. 1k ain't a option no more. I have the gm HEI in my shop. And won't cost me much if anything to use. Along with floor pans. Wireing. Carpet. Sound, engine, fuelcell, dual batt's. This is already a costly build. And not to mention the new grill, and bodywork.

 

How do 15pound injectors compare to our stock ones?

 

280zx n/a's are about 18lb/hr... or roughly 185cc.

Check out this fuel injector calculator: http://www.witchhunter.com/injectorcalc1.php4